Grits-separating machine



J. D. MOORE.

GRITS SEPARATING MACHINE.

APPLICATION FILED APR.27, 1911.

Patented July 20, 1920.

3 SHEETS-SHEET I.

w x new A e M Z 0 r. t a

J. D. MOORE.

GRITS SEPARATING MACHINE.

APPLICATION FILED APR.27,1917,

1,347, 1 14. Patent d July 20, 1920.

3 SHEEIS-SHEET 2.

A 6, a mveuto'a Wi-hmoo J. D. MOORE.

GRITS SEPARATING MACHINE.

APPLICATION FILED APR.27,1917.

1,347, 1 1 4. Patented July 20, 1920.

3 SHEEIS-SHEET 3.

UNITED STATES PATENT OFFICE.

JAMES DUDLEY MOORE, OF NORTH WILKESBORO, NORTH CAROLINA.

GRITS-SEPARATING MACHINE.

To all whom it may concern:

Be it known that I, JAMES D. MOORE, a citizen of the United States, residing at North Wilkesboro, in the county of Wilkes and State of North Carolina, have invented a new and useful Grits-Separating Machine,.of which the following is a specification.

This invention relates to a grits separating machine wherein a rotary sieve cooperates with a suction element, and the objects of the invention are, first, to provide a sieve for separating the grits and delivering the same to separate compartments and air suction means for further separating the grits so delivered, second, to provide a 'sieve and hoppers associated therewith and means for drawing air through the grits while delivering the grits from the hoppers, third, to providehoppers for receiving separated grits, and means for spreading the grits, while being delivered from the hoppers, in the path of an air current, fourth, to provide hoppers for receiving separated grits, and means for drawing further particles from the separated grits and delivering them to a receptacle, and fifth, to provide a simple and efficient grits separator.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

One practical embodiment of the invention is shown in the accompanying drawings, wherein Figure 1 is a side elevation, with one portion in section, of a separator constructed in accordance with my invention.

Fig. 2 is a central, longitudinal, vertical section, a small portion being left in elevation to show the fan and its connecting pipes.

Fig.'-3 is a vertical cross section taken on the line 3-3 of Fig. 2.

Fig. 4 is a detail vertical section of the discharge port of a hopper.

Fig. 5 is a similar view of a modified form of discharge port.

Specification of Letters Patent.

Patented July 20,1920. 1917. Serial No. 165,003.

Fig. 6 is a cross section on the line 66 of Fig. 5.

Referring to the drawings by characters of reference, a substantially rectangular frame consisting of the stringers 1, their cross beams 2, and uprights 3, constitute the main support of the device.

A horizontally disposed shaft 1, extendmg longitudinally of the machine, turns in suitable journals secured to the uprights 3 at one side of the frame, and forms the main drive shaft of the device. A pulley 5 is secured on the shaft 4 and is adapted to be belted to any suitable source of power. Another pulley 6 is secured to the shaft 4 and is positioned for engagement, through a belt 7, with a pulley 8 which is secured on a horizontally disposed counter shaft 9. Counter shaft 9 is journaled in angular brackets 10, which are secured to one side of the frame. The counter shaft 9 extends beyond one end of the machine, as seen in Fig. 1, and a pulley 11 is secured on this extended end. A shaft 12, arranged on a slight incline, extends longitudinally of the machine and is suitably journaled in each end of the frame. This shaft 12 extends beyond the frame at one end, and on this end is secured a pulley 13 which is belted to the pulley 11 by a belt 1 1.

Hubs 15, formed with radial arms or spokes 16, are secured on the shaft 12. A tubular sieve 17 is supported on the ends of the arms 16. This sieve may be of any preferred shape, but, as here shown, it is in the form of an octagonal prism. The sieve 17' is composed of three longitudinal sections, the section at the feed end of the sieve, indicated at F, being of fine mesh, the median section, indicated at M, being of medium mesh, and the other end section, indicated at 0, being formed of coarse mesh. A ring 18 may be secured within the sieve at its feed end for the purpose of preventing material fed to the sieve falling out. An angular feed spout 19 is secured to a cross beam 2, at one end of the frame and is positioned to deliver grits or other material, within the sieve 17 A receptacle 20, formed with an inclined side 21, is supported within the frame immediately below the section F of the sieve. Similar hoppers 22 and 23 are supported in the frame of the machine and are positioned immediately below the sections M and C, respectively, of the Sieve. A depending spout 24 is formed at one end of the frame and is positioned to receive material from the discharge end of the sieve.

' A fan casing 25 is secured to the floor of the main frame at one side thereof, and within this casing turns a rotary fan on the shaft 26 of which is secured a pulley 27 which is driven, through a belt 28, by a other arm extends into the hopper 23 in a similar manner. Each arm, within its hop-- per, is bent downwardly to terminate at the contracted discharge end of the hopper. A valve casing 31 may be interposed in each arm of the T, in the slot of which a slide 32 may be reciprocated.

An out-take pipe 33 rises from one side of the fan casing 25 and has its upper end angularly disposed to take into the frustoconical hood of a hopper 34, which is suitably supported on the side, and near the top of the main frame. The hopper 34 has a dependingdischarge spout 35,-and-th'e head 36 of its hood is formed with a central aperture from which depends a cylindrical pipe 37.

The discharge end of each hopper 22 and c 23 has adjustably secured therein a ring 38 which is secured, when adjustech -by a set screw 38. The central openingof the ring is of less diameter than the interior diameter of the arms of the T of pipe 30.

In Figs. 5 and 6, a modified form of-outlet for the hoppers 22 and 23 is shown; In this instance, a cone-shaped deflector 39 is suspended, at its apex, from arms 40 which are secured to said apex and extend radially therefrom and have their outer ends suitably secured in thewall of the discharge spout 41 of the hopper. The deflector 39 hangs without the mouth of thedischarge spout 41, as seen most clearly in Fig. 5. A cylindrical member 42 is securedto the hop per and depends therefrom in spaced re lation with the discharge spout 41, which it surrounds. The arm of the T of pipe 30 takes into this cylindrical member 42, at a point above the discharge end of -the spout '41. I

In practice the device is used in the following manner :The main drive pulley 5 V is belted to any suitable source of power and the parts rotated through their various connecting belts.- Grits are then fed through the angled "spout 19 into the sieve 17 The sieve, as viewed'in Fig. 3, is rotating: clockwise. The grits first pass through :thesection "F of the sieve, which is the longest section. Because of the small mesh used in this portion of the sieve, only the finer particles or meal will gravitate through the sieve to the receptacle-20. Because of the form of the sieve the particles are not merely rolled around the inner surface, as in a cylinder, but are agitated and tossed from one face of the sieve to the next, thus more rapidly and effectively siftingthem. The particles of grits, which are too large to pass through the small mesh of the section Fof the sieve,will gravitate to the section M, and here particles of grits will pass through the sieve and fall into the hopper 22. The particles which are too large to pass through the medium mesh spout 24 to any suitable receptacle provided for their reception.

The rotation'of the parts has also caused rotation of the fan within its casing 25. This rotation, being clockwise, viewing the machine as before, will cause an intake of air through the pipe 30 and an outtake through the pipe 33. Considering the slides 32 open, air will be drawn through the opening ofeach ring 38 and into the pipe 30. The grits which have fallen from the sieve into the hopper 22 or 23 will gravitate to the discharge opening from which they can only escape by spreading around the T arm and passing under the intake end thereof. The ring 38, having been adjusted to the proper position, will retard theescaping particles and spread them in the path of the incoming air which sucks therefrom any light small particles which may remain.

These particles aresucked through the pipe 30 to the fan casing and from thence blown through the pipe 33 to the hopper 34. On

entering the hopper 34 the particles will be" projected tangentially and will circle around the depending cylinder 37, which 7 sucked. This will place the particles in position to have light particles-of meal or chaff drawn up into the T arm of pipe 30,

Itis apparent that the slide 32 maybe manipulated to regulate the flow of incoming air, and so prevent'particles of'gritsbeing drawn to the fan. 7

Having described my invention, what I claim as new and desire to secure by Letters Patent is 10 the fan, said pipe having its inlet end above,

and concentric with the axis of the bafile ring, said ring being adjustable bodily toward and from the pipe.

In testimony that I claim the fore oing as my own, I have hereto affixed my slgna- 15 ture in the presence of two Witnesses.

J AMES DUDLEY MOORE. Witnesses:

J. A. Rousseau, A. W. HORTON. 

